Improvement in adjustable sights for fire-arms



C. M. MILES. SLght for Fire-Mms.

Pnd DCC. 6, 1864,

Werf W27 NPETERS, PHOTD-LITHOGRAPHEH. WASHINGTON. D. CA

up, as shown at b in Fig. l.

UNITED STATES PATENT OEEICEe CHARLES M. MILES, OF VINELAND, NEV JERSEY.

IMPROVEMENT IN ADJUSTABLE SIGHTS FOR FIREARMS.

Speciteatioli forming part of Letters Patent No. 415,333, dated December 6, 1864.

To all whom it may concern:

Beit known that I, CHARLEs M. MiLEs, of Vineland, in the county of Cumberland and State of New Jersey, have invented a new and useful Improvement in Adjustable Sights for Fire-Arms; and I do hereby declare that the following is a full, clear, and enact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings,

forming a part of this specification, in which- Figure lis a central longitudinal vertical section of my adjustable sight on ascale larger than the natural size, Eig. 2, a plan view of the same; Fig. 3, a transverse vertical section of the same.

Similar letters of reference indicate like parts.

This invention consists in forming the sight notch or opening in one -end of a spring of thin steel plate,which is fitted to slide through a curved slot in the iiXed base-piece by which the sight is attachedv to the barrel of the lirearrn, a portion of the saidspring being presented above the base in an upright or nearly upright position, and the notch or opening being raised or lowered for different distances by shifting the spring longitudinally through the base-piece.

A is the base-piece, made of greater length than usual, having` the 'usual dovetail tongue under the rear portion of its bottom toenter a transverse groove in the top of the barrel of the fire-arm, and having its front end turned This base has a vertical longitudinal groove, c, in its under side, which unites with an upwardly-curved slot, d, in the turned-up portion a of .the base, and in the side of this groove there are two horizontal grooves, e e. (See Eig. 3.)

B is the spring, in the front end of which the sight-notch j" is formed. This spring is' To the rear end of this spring there is riveted or otherwise firmly attached a slide-block, G, which passes under the bottom of and ts to the sides of the base, the sides of th'e groove c being cut away to permit the said slide to move lengthwise of the base a sufficient distance for the adjustment of the sight-spring.

The sight is adjusted for different distances by taking hold of the slide-block C with the fingers and moving it forward or backward along the base A, by which the springy B is moved through the slot d in such manner as to cause the front end, containing the sightnoteh f, to be raised to a higher or lower position, according to the distance of the object to be shot-at. The elevation of the sight for different distances is indicated by means of index4 notches g g in the upper edges of the slide block, and a scale of lines, 7L h, marked across the top of the base A. The lines may be marked with the different distances.

I claim as my invention and desire to secure by Letters Patentf The spring B, containing the sight notch or opening f, sliding longitudinally through the base-piece A, substantially as and for the purpose herein specified.

CHARLES M. MILES. Witnesses:

C F. JoNEs, S. A. J oNEs. 

